asphalt coating meaning in Chinese

沥青涂布
沥青涂层

Technology standard of petroleum asphalt coating for buried steel pipeline
埋地钢质管道石油沥青防腐层技术标准
Auto - asphalt coating line of pipes
沥青喷涂线
Asphalt coated aggergates
涂有沥青的骨料
Asphalt coated paper
沥青涂布纸
Standard practice for application of asphalt coatings to corrugated steel sewer and drainage pipe
沥青覆层在波纹钢污水管和排水管上的应用的标准操作规程